BEGIN:VCALENDAR
VERSION:2.0
PRODID:Institute for Theoretical Physics - Events
X-WR-CALDESC:SFB1238
X-WR-CALNAME:SFB1238
X-WR-TIMEZONE:Europe/Berlin
BEGIN:VEVENT
SUMMARY:SFB1238 | Tim Wehling
DTSTART;VALUE=DATE-TIME:20171009T130000
DTEND;VALUE=DATE-TIME:20171009T140000
DTSTAMP;VALUE=DATE-TIME:20180222T061255Z
UID:0000001125@events.thp.uni-koeln.de
DESCRIPTION:Tim Wehling\, Universität Bremen\n\nElectronic Interactions i
n Two-Dimensional Materials\n\nSince the isolation of monolayer graphene\,
the library of two dimensional (2d) materials has been continuously growi
ng. Together with recent developments in on-demand stacking of these atomi
cally thin crystals\, a whole new class of hybrid materials is coming into
reach\, which holds promises from the realization of exotic electronic qu
antum phases at elevated temperatures to novel optoelectronic applications
. Interactions between electrons are central to all these kinds of promise
s. In my talk\, I will discuss why Coulomb interactions in 2d materials ar
e very different from their 3d counterparts\, how they influence material
properties and how interactions can be manipulated in 2d materials. As exa
mple systems I will consider graphene as well as transition metal dichalco
genides like MoS2. In these systems interactions renormalize electronic qu
asiparticles through pronounced band gap shifts\, lead to the emergence of
many-particle modes such as excitons with unusually high binding energies
and can finally drive the electron system towards different kinds of inst
abilities including superconductivity and charge density wave states.\n\nC
ontact Person: T. Michely
LOCATION:Seminar room Institute of physics 2
END:VEVENT
END:VCALENDAR